In single star evolution the WD mass does not reach a mass larger than about \(1.1 M_\odot \) . Calculations show that a LTP/VLTP does not ignite the WD (otherwise we would have a much larger number of SNe Ia than observed). However, a LTP/VLTP on a merger remnant that is about the Chandrasekhar mass, \(M_{\rm rem} \simeq 1.4 M_\odot \) , might ignite the WD, similar to the ignition by a thin helium shell in some channels of the DDet scenario (e.g., [1]}). [1]} find that a pure helium shell mass of \(\simeq {\rm few} \times 0.001 M_\odot \)  can ignite a WD of mass \(1.3 M_\odot \) . A small mixture of CO into the helium ease the ignition of helium. Since I take the helium mass to be \(\Delta M_{\rm He,TP} 0.01 M_\odot \) , which is condition 1 (equation REF ), the LTP/VLTP might ignite the WD.
During the LTP/VLTP the star is hydrogen-deficient with total hydrogen mass of \(10^{-5} M_\odot \)  (e.g., [3]}), and so the explosion will be indeed classified as a SN Ia (or a peculiar SN Ia).
